Synthesis of MoO3/V2O5/C Composite as Novel Anode for Li-Ion Battery Application

The MoO 3 /V 2 O 5 /C, MoO 3 /C and V 2 O 5 /C are synthesized by electrospinning combined with heat treatment. These samples are characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy and thermogravimetric analysis (TG) techniques. The results show that sample MoO 3 /V 2 O 5 /C is a composite composed from MoO 3 , V 2 O 5 and carbon. It takes on morphology of the nanofibers with the diameter of 200~500 nm. The TG analysis result showed that the carbon content in the composite is about 40.63%. Electrochemical properties for these samples are studied. When current density is 0.2 A g −1 , the MoO 3 /V 2 O 5 /C could retain the specific capacity of 737.6 mAh g −1 after 200 cycles and its coulomb efficiency is 92.99%, which proves that MoO 3 /V 2 O 5 /C has better electrochemical performance than that of MoO 3 /C and V 2 O 5 /C. The EIS and linear Warburg coefficient analysis results show that the MoO 3 /V 2 O 5 /C has larger Li+ diffusion coefficient and superior conductivity than those of MoO 3 /C or V 2 O 5 /C. So MoO 3 /V 2 O 5 /C is a promising anode material for lithium ion battery application.